Long-term survival and risk factors for recurrence in stage I non-small cell lung cancer patients with tumors up to 3 cm in maximum dimension

Ryo Maeda, Junji Yoshida, Genichiro Ishii, Tomoyuki Hishida, Keiju Aokage, Mitsuyo Nishimura, Yutaka Nishiwaki, Kanji Nagai

研究成果: Article査読

35 被引用数 (Scopus)

抄録

Background: The purpose of this study was to evaluate patients with stage I non-small cell lung cancer (NSCLC) and tumors up to 3 cm in maximum dimension who underwent surgical resection on the revised TNM classification and to investigate the risk factors for recurrence. Methods: Between 1994 and 2003, 713 consecutive stage I NSCLC patients with tumors up to 3 cm in maximum dimension underwent complete resection. Recurrence-free probability was estimated from the date of the primary tumor resection to the date of the first recurrence or the last follow-up using the Kaplan-Meier method. Results: The recurrence-free probability of stage I NSCLC patients with tumors up to 3 cm in maximum dimension was 87% at 5 years. On multivariate analyses, three variables were shown to be independently significant recurrence risk factors: histologic differentiation (hazard ratio, 2.3), intratumoral vessel invasion (hazard ratio, 2.9), and visceral pleural invasion (VPI) (hazard ratio, 1.8). According to subgroup analyses combining these three risk factors, the 5-year recurrence-free probability was 94% for patients with zero or one factor (n = 492) and 71% for patients with two or three factors (n = 221), respectively (P<.001). Conclusion: In stage I NSCLC patients with tumors up to 3 cm in maximum dimension, we identified three risk factors for recurrence that independently increase their risk of recurrence. In addition to VPI, histologic differentiation and intratumoral vessel invasion should be examined and their data collected for the next revision of the TNM staging system.

本文言語English
ページ(範囲)357-362
ページ数6
ジャーナルChest
138
2
DOI
出版ステータスPublished - 2010 8 1
外部発表はい

ASJC Scopus subject areas

  • 呼吸器内科
  • 集中医療医学
  • 循環器および心血管医学

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